Just giving you some options

SELECT * FROM gallery2 WHERE topic_id="1369418" UNION SELECT * FROM gallery2 WHERE topic_id="783072" UNION SELECT * FROM gallery2 WHERE topic_id="74698" UNION SELECT * FROM gallery2 WHERE topic_id="1080286" UNION SELECT * FROM gallery2 WHERE topic_id="767392" UNION SELECT * FROM gallery2 WHERE topic_id="1268899" UNION SELECT * FROM gallery2 WHERE topic_id="1337450" UNION SELECT * FROM gallery2 WHERE topic_id="597108" UNION SELECT * FROM gallery2 WHERE topic_id="68154" UNION SELECT * FROM gallery2 WHERE topic_id="1401117" UNION SELECT * FROM gallery2 WHERE topic_id="1455346" UNION SELECT * FROM gallery2 WHERE topic_id="1553179" UNION SELECT * FROM gallery2 WHERE topic_id="268230" UNION SELECT * FROM gallery2 WHERE topic_id="1721711" UNION SELECT * FROM gallery2 WHERE topic_id="1777344" UNION SELECT * FROM gallery2 WHERE topic_id="842936"